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Messages - Josh

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1
Utility / Re: 11175 USB
« on: May 26, 2021, 0557 UTC »
Some notes on the above posts;

When you hear lots of eams going out there may be something afoot, or in this case the quarterly SKYMASTER exercise as denoted by the callsign intercepted. In contrast to when "Gulf War - The Miniseries" came out in 1991 the eam opening the ceremonies was 130 some characters long.

The LFL (Letter Figure Letter) calls heard on HFGCS such as I1C might be a USN/MARINE CORPS unit, or any number of NATO users as trigrafs are a NATO tactical standard.

As SKYMASTER is a STRATCOM nuclear forces command exercise there are going to be USN players participating so my money's on USN. The USN contingent could be TACAMOs but TACAMOs normally have word callsigns.

Also the CORDO 14 might have been GORDO 14 as GORDO is a well known USAF call going by memory.

2
Utility / Re: CIS Navy on HF
« on: May 05, 2021, 0142 UTC »
12464 has featured some interesting simplex traffic between two stas around 2300z if anyone is still listening.

3
143.6250mHz 1224Z 04MAY21
Unid om in French, then test counts by at least 3 players in "Canadian" english or accents spoken by non US english users.

US CAP has holdings on the freq in question but this signal had the characteristics of an airborne or sat intercept.

https://en.wikipedia.org/wiki/Voskhod-M

the mir space station also used this qrg and is listed as soyuz and iss so my moneys on iss and related

4
Utility / Re: CIS Navy on HF
« on: April 02, 2021, 1755 UTC »
VVV VVV RIT RIT RIT de RGB59 QTC? etc etc
8345 0316Z 02FEB21

RGB59 - new call logged, voice call MALBERT, of the Black Sea Fleet, iono what kinda ship it is, very stronk sovietskaya signalskiis at this QTH

6
Equipment / Re: Mystery 1960's B&W Balun?
« on: August 22, 2020, 1939 UTC »
I don't think these have any transformative circuit, they just go from balanced to unbalanced lines. Could always take it apart to see. As such it might be able to take a good bit of power. Now if it was one of the bw baluns for the receive only or qrp version of their folded dipole, do not tx into it with more than a few watts.

7
It turns out that many LTE carriers reuse the same keystream when two calls are made within a single radio connection. An attacker can then record an encrypted conversation, then immediately call the victim after that conversation. The attacker can now access the encrypted keystream, and as the keystream is identical to the first conversation, the first conversation can now be decoded.
https://www.rtl-sdr.com/eavesdropping-on-lte-calls-with-a-usrp-software-defined-radio/

8
Huh? / Re: Papilio Polyxenes
« on: August 20, 2020, 1810 UTC »
Seen way more of the black swallowtails or whatever they're called as opposed to Monarchs.

https://www.youtube.com/watch?v=MMGhw-FJsuI

9
HF Mystery Signals / Re: Need help on multi-tone signal ID
« on: August 20, 2020, 1749 UTC »
You might consider splitting this up into files a bit less than 300mb.

10
Yeah no it's not like the ability to record audio and play it back hasn't been around for ages now, or that anyone would ever dare to do that to bell.

11
I wonder if this was a relay craft, with battles taking place hundreds of miles from the home carrier force and hf hit or miss at that distance, a v/uhf relay would fill the gap.

This was common in the ETO (European Theatre of Operations) where missions over Germany and many other countries of similar distance to England would necessitate a v/uhf relay.

In such cases, a pair of fighters would be sent to orbit offshore northern Europe, providing a radio relay between command and the units over the target with very good success.

A pby would have much longer duration on station than a fighter and provide more comfort and amenities to the crew in this duty, as well as afford the means to recover airmen when possible.

12
10/11 meters / Re: 11 Worldwide Contest
« on: July 18, 2020, 2034 UTC »
Shame to see this disease spread from HAM radio.

13
Huh? / Re: You Were In Radio, When!!!!!!!!
« on: July 15, 2020, 1545 UTC »
Ahhhh the reel to reels. I recall a fine day when a promo was slotted for my show and the jock before me hadn't lined me up with the tape. When you walked into the console you would (or were supposed to) have a pile of paid advertising and promos that were for your slot, and this hour long special from the ryman auditorium was nowhere to be found and I am all alone.

Suddenly the sm shows up and I report to him the tape's not here and is on in 4 minutes, he gets mad and starts running all over the station with veins bulging trying to find it, I find it in the pile to be erased in another room and tell him, he gets even madder and pretty much blames me for everything. I walked over to the console after setting up the tape and slammed the feed from the track that was ota to the special, f the sm in his face, who didn't say a word. I didn't last much longer there, the place was falling apart and continued after I jumped ship, the owners fired pretty much everyone including the sm and started over. There was the finding of inappropriate materials in the booth wastebasket as well as the scandalous use of the station vacuum cleaner on a home carpet that ruined said vacuum, everyone talking about everyone else and on and on insane shit. I was thinking my god this place is worse than high school.

The guy who came on after me said there'd been a few complaints and I was like that's all I needed to hear, I'm out. And he panics and is like whoa wait you gatta give them some time before you jump and I was all like nah bruh I'm out, laids.

You couldn't pay me enough to do that job again.

14
Huh? / Re: You Were In Radio, When!!!!!!!!
« on: July 14, 2020, 1737 UTC »
We had carts for psas and promos/commercials, giant reel to reels from the 40s that were used every day and looked almost new, and a vcr (audio only lol) to record the sat feeds we time slotted. I'd say the station got its moneys worth outta those reel to reels.

15
Not only does propagation delay make an impact but interleaving and/or fec in the signal will also add delays, however minor they may be. S4285, what drm is based on as I recall, has some interleave/fec modes that can cause several seconds of delay.

https://www.etsi.org/deliver/etsi_es/201900_201999/201980/03.02.01_60/es_201980v030201p.pdf.

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